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IEC Lesson 106 HW 2026 Exam Questions and Answers (35+ Q&A) | Lockout/Tagout, OSHA Safety, Ohm's Law & NEC Box Installation Review

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This IEC Lesson 106 Homework study guide contains more than 35 carefully selected exam questions and verified answers covering essential safety procedures, electrical fundamentals, NEC box installation requirements, and introductory calculations frequently assessed in early electrical apprenticeship programs. Designed to support students preparing for Lesson 106 assignments, quizzes, and module examinations, the material provides a concise yet comprehensive review of lockout/tagout procedures, OSHA safety expectations, personal protective equipment, GFCI requirements, Ohm's Law applications, and basic electrical mathematics. The straightforward question-and-answer format promotes active recall and allows apprentices to reinforce foundational concepts critical to both examination success and safe jobsite practices. This resource places significant emphasis on hazardous energy control procedures and workplace safety responsibilities. Students will review lockout/tagout requirements, employee notification procedures, temporary re-energization protocols, lock removal rules, crew lockout responsibilities, engineering controls, enforcement of safety policies, OSHA servicing and maintenance requirements, and the importance of using authorized lockout devices. Additional safety concepts include the proper application of GFCI protection for 120-volt tools used on construction sites, the role of PPE in reducing occupational risk, and the consequences of electrical system failures involving property damage, equipment loss, and fire hazards. Fundamental electrical theory is reinforced through practical review of Ohm's Law formulas and introductory calculations. Learners will practice relationships between voltage, current, and resistance using E = I × R, I = E ÷ R, and R = E ÷ I, while also exploring proportional relationships within DC circuits. The guide further includes basic mathematical formulas frequently encountered in apprenticeship training, including calculations involving the area of squares, rectangles, triangles, and circles, as well as volume formulas for rectangular and cylindrical objects. The study material also introduces NEC concepts related to electrical boxes and device installations, including outlet box requirements under NEC Section 300.15, allowable box setbacks in combustible and noncombustible surfaces, switch symbols, knockout sizes, and installation requirements for ceiling-suspended paddle fans. By combining safety principles, electrical fundamentals, and introductory Code applications, this review resource provides apprentices with a strong foundation for both classroom performance and practical field experience. The concepts presented align with recognized industry references and safety standards commonly utilized throughout IEC apprenticeship programs, including: • OSHA Control of Hazardous Energy (Lockout/Tagout), 29 CFR 1910.147. • OSHA Construction Safety Standards. • NFPA 70: National Electrical Code® (NEC®). • NFPA 70E: Standard for Electrical Safety in the Workplace. • IEC apprenticeship curriculum competencies and instructional objectives. Relevant Students: This document is ideal for IEC Level 1 apprentices, first-year electrician trainees, electrical trade school students, construction electrical apprentices, maintenance trainees, pre-apprenticeship students, residential wireman candidates, and learners seeking a practical review of workplace safety procedures, basic electrical theory, and foundational NEC requirements. Keywords: IEC Lesson 106, IEC Lesson 106 HW, IEC Lesson 106 homework answers, IEC 2026 exam questions, electrical apprenticeship, Level 1 electrician, lockout tagout, LOTO, OSHA safety, hazardous energy control, OSHA 1910.147, PPE, GFCI protection, construction safety, electrical safety, workplace safety, NFPA 70E, Ohm's Law, E equals IR, current calculations, voltage calculations, resistance calculations, electrical math, area formulas, volume formulas, NEC Section 300.15, outlet boxes, box installation requirements, paddle fan boxes, switch symbols, electrical fundamentals, electrician study guide, trade school review, apprenticeship exam preparation

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IEC Lesson 106 HW 2026 Exam
Questions and Answers |
Already Graded A+



If you have to temporarily re-energize equipment while you are working

on it, you must re-apply energy release and lockout/tagout as soon as

energy is no longer needed in the system. - ANSWER ✔✔true


For fair enforcement of safety rules, a worker should know the penalties

for failing to follow the rules. - ANSWER ✔✔true


In a lockout, one person is allowed to attach a single lock for an entire

work crew. - ANSWER ✔✔false

, Before removing lockout/tagout devices, you must make sure the danger

area is clear of tools and workers. - ANSWER ✔✔true


If a worker is not present to remove his own lock, any co-worker can

remove it as long as he first makes sure it's safe. - ANSWER ✔✔false


In a lockout/tagout, an emergency isolating device is locked in the safe

(open or off) position and written warning is attached to it. - ANSWER

✔✔true


Before lockout/tagout is applied, all workers in the affected area must be

notified. - ANSWER ✔✔true


Engineering safety features on equipment are fool-proof ways of

protecting workers from hazardous energy. - ANSWER ✔✔false


Each individual employee can decide whether to use lockout/tagout

procedures. - ANSWER ✔✔false


prevent safety switches from being energized - ANSWER ✔✔


Where used inside a building on a jobsite, 120 volt power tools are

required to be plugged into a GFCI protected receptacle or GFCI

protected extension cord (connector or female end). - ANSWER

✔✔true

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